Zte ZXR10 T1200, Руководство пользователя

Страница: 14 / 83

ZXR10 T600/T1200 User Manual (IPv6 Volume)
Allocation Prefix Fraction of Address
Space
Unallocated 1111 1110 0 1/512
Link local unicast
address 1111 1110 10 [FE8] 1/1024
Site local unicast
address 1111 1110 11 [FEC] 1/1024
Multicast address 1111 1111 [FF] 1/256
Note:
The hex number in the [] in this table refers to the starting and
ending hex numbers of the corresponding address.
Broadcast address in IPv6 is not valid any more. RFC2373 defines
three types of IPv6 address:
� Unicast
It is the identifier of a single interface. The packets sent to a
unicast address will be transmitted to the interface with this
address identifier.
� Multicast
It is the identifier of a group of interfaces. These interfaces
belong to different nodes. The packets sent to a multicast ad-
dress will be transmitted to all the interfaces with this address
identifier.
� Anycast
It is the identifier of a group of interfaces. These interfaces be-
long to different nodes. The packets sent to an anycast address
will be transmitted to an interface with this address identifier
(selecting the nearest one by calculating the distance based on
routing protocol).
An IPv6 unicast address can be regarded as an entity with two
fields. One field is used to identify networks and the other is used
to identify interfaces of nodes on this network. In the subsequent
description of the specific unicast address types, the user will find
that the network identifier can be divided into several parts, each
of which identifies different network part.
� Unicast Address
Functions of an IPv6 unicast address are subject to Classless
Inter Inter-Domain Routing (
CIDR ), which is the same as that
of an IPv4 address. That is, an address is divided into two
parts upon a specific boundary. The high bit part of an address
includes prefixe for routing and the low bit part includes iden-
tifiers of network interfaces.
6 Confidential and Proprietary Information of ZTE CORPORATION